Cheap flights from Ireland to Belfast from €43

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Belfast departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ireland to Belfast

Recent return flight deals from Ireland to Belfast

Enter your travel dates to find the best prices.
Multiple Airlines Logo
15:00 - 20:25
DUB
-
BFS
5h 25m1 stop
Multiple Airlines Logo
22:25 - 11:10
BFS
-
DUB
12h 45m1 stop
€87Multiple Airlines
Fri, 9 Jan - Sat, 10 Jan
Multiple Airlines Logo
21:45 - 08:50
DUB
-
BFS
11h 05m1 stop
Multiple Airlines Logo
23:10 - 11:35
BFS
-
DUB
12h 25m1 stop
€92Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan
Multiple Airlines Logo
21:45 - 07:25
DUB
-
BFS
9h 40m1 stop
Multiple Airlines Logo
05:45 - 11:35
BFS
-
DUB
5h 50m1 stop
€93Multiple Airlines
Sun, 18 Jan - Sun, 25 Jan
Multiple Airlines Logo
19:55 - 08:25
DUB
-
BFS
12h 30m1 stop
Multiple Airlines Logo
07:15 - 14:40
BFS
-
DUB
7h 25m1 stop
€93Multiple Airlines
Wed, 31 Dec - Wed, 7 Jan
Multiple Airlines Logo
15:15 - 22:45
DUB
-
BFS
7h 30m1 stop
Multiple Airlines Logo
10:10 - 14:50
BFS
-
DUB
4h 40m1 stop
€99Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan
Aer Lingus Logo
11:45 - 17:20
DUB
-
BHD
5h 35m1 stop
Aer Lingus Logo
11:05 - 14:50
BHD
-
DUB
3h 45m1 stop
€158Aer Lingus
Sat, 17 Jan - Sat, 24 Jan
Aer Lingus Logo
07:20 - 13:25
DUB
-
BHD
6h 05m1 stop
Aer Lingus Logo
06:55 - 10:50
BHD
-
DUB
3h 55m1 stop
€176Aer Lingus
Sat, 17 Jan - Sat, 24 Jan
KLM Logo
05:55 - 16:50
DUB
-
BHD
10h 55m1 stop
KLM Logo
17:20 - 08:05
BHD
-
DUB
14h 45m1 stop
€221KLM
Sat, 17 Jan - Sat, 24 Jan
British Airways Logo
20:10 - 08:15
ORK
-
BHD
12h 05m1 stop
British Airways Logo
09:15 - 23:25
BHD
-
ORK
14h 10m1 stop
€306British Airways
Sat, 17 Jan - Sat, 24 Jan
British Airways Logo
20:10 - 08:15
ORK
-
BHD
12h 05m1 stop
British Airways Logo
15:05 - 23:25
BHD
-
ORK
8h 20m1 stop
€307British Airways
Sat, 17 Jan - Sat, 24 Jan

KLM flights from Ireland to Belfast

Our best KLM deals on Ireland to Belfast flight tickets
KLM
17 Jan
DUB05:55Dublin
10h 55m
1 stop
BHD16:50Belfast City
24 Jan
BHD17:20Belfast City
14h 45m
1 stop
DUB08:05Dublin
KLM
17 Jan
DUB05:55Dublin
10h 55m
1 stop
BHD16:50Belfast City
24 Jan
BHD17:20Belfast City
14h 45m
1 stop
DUB08:05Dublin
KLM
17 Jan
ORK15:40Cork
25h 10m
2 stops
BHD16:50Belfast City
24 Jan
BHD17:20Belfast City
21h 40m
2 stops
ORK15:00Cork

British Airways flights from Ireland to Belfast

Our best British Airways deals on Ireland to Belfast flight tickets
British Airways
17 Jan
DUB20:40Dublin
12h 30m
1 stop
BHD09:10Belfast City
24 Jan
BHD09:15Belfast City
5h 50m
1 stop
DUB15:05Dublin
British Airways
17 Jan
DUB20:40Dublin
12h 30m
1 stop
BHD09:10Belfast City
24 Jan
BHD09:15Belfast City
5h 50m
1 stop
DUB15:05Dublin
British Airways
11 Feb
DUB13:10Dublin
5h 30m
1 stop
BHD18:40Belfast City
14 Feb
BHD06:35Belfast City
7h 45m
1 stop
DUB14:20Dublin

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from Ireland to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 9/1

15:00-20:25

1 stop5h 25m

Belfast Intl

Sat 10/1

22:25-11:10

1 stop12h 45m

€87

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 17/1

21:45-08:50

1 stop11h 05m

Belfast Intl

Sat 24/1

23:10-11:35

1 stop12h 25m

€92

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 18/1

21:45-07:25

1 stop9h 40m

Belfast Intl

Sun 25/1

05:45-11:35

1 stop5h 50m

€93

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Wed 31/12

19:55-08:25

1 stop12h 30m

Belfast Intl

Wed 7/1

07:15-14:40

1 stop7h 25m

€93

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 17/1

15:15-22:45

1 stop7h 30m

Belfast Intl

Sat 24/1

10:10-14:50

1 stop4h 40m

€99

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 17/1

11:45-17:20

1 stop5h 35m

Belfast City

Sat 24/1

11:05-14:50

1 stop3h 45m

€158

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 17/1

07:20-13:25

1 stop6h 05m

Belfast City

Sat 24/1

06:55-10:50

1 stop3h 55m

€176

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 17/1

05:55-16:50

1 stop10h 55m

Belfast City

Sat 24/1

17:20-08:05

1 stop14h 45m

€221

CorkBelfast

ORK - BHD

ORKBHD

Cork

Sat 17/1

20:10-08:15

1 stop12h 05m

Belfast City

Sat 24/1

09:15-23:25

1 stop14h 10m

€306

CorkBelfast

ORK - BHD

ORKBHD

Cork

Sat 17/1

20:10-08:15

1 stop12h 05m

Belfast City

Sat 24/1

15:05-23:25

1 stop8h 20m

€307

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Ireland to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ireland to Belfast?

Ryanair and Aer Lingus are the most popular carriers operating from Ireland to Belfast

Cheap Ireland to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Belfast

Fastest flight time

4h 20m

Direct flights

None
The fastest flight from Ireland to Belfast takes 4h 20m
There are no direct flights from Ireland to Belfast. There are no popular flight routes from Ireland to Belfast.
  • When did momondo last update prices for flights from Ireland to Belfast?

    Prices for flights from Ireland to Belfast are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ireland to Belfast?

  • How old do you have to be to fly from Ireland to Belfast?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Ireland to Belfast

Compare and see reviews for airlines that fly from Ireland to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom €260Free CancellationRating
6.7
7,562 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Belfast?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Belfast . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ireland to Belfast with flexible booking policies on momondo?

Yes. All flights to Belfast from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ireland to Belfast?

Once all potential Ireland to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ireland to Belfast right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ireland to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.

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1 adult
Sun 4/1
Sun 11/1

Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 19.6 km from Belfast